The Mixture as Before

"The Mixture as Before" is one of fourteen short stories written by Leslie Charteris and included in the thirteenth Saint book Boodle (aka The Saint Intervenes) published in 1934.

Plot
The Saint turns the tables on a scam artist who claims he can make genuine diamonds in his bathtub. This is the second time Templar has matched wits with a would-be alchemist; in "The Gold Standard", a novella in Once More the Saint, he went up against a man who claimed he could create gold.